I am renovating my kitchen cabinets and everything in the master bathroom. My contractor marks up a lot for the kitchen and bathroom tops and so I am looking for an honest direct supplier. I have read up that polyester may stain and not last as long as quartz or granite. There are different grades I know. In fact the best quartz it seems is iQuarts. I am thinking of cheaper granite from China and a cheaper quartz. Any recommendations for direct supplier or what to be aware of China granite and cheaper quartz? Thank you.